# =============================================================================
# SeaweedFS Terraform core module - input variables
#
# This module is a PURE RENDERER. It creates zero cloud resources. It takes a
# per-node address map plus configuration and emits, per node, the rendered
# `weed` argv, systemd unit, cloud-init, and config files. Both the per-cloud
# infra wrappers (consume cloud_init/systemd_unit) and the local test harness
# (consume argv/config_files) read its `nodes` output.
#
# Flag names below are verified against the real `weed` binary, not the chart.
# Notably: volume uses -mserver for the master list; gRPC is -port.grpc
# (auto = http+10000); minFreeSpacePercent is a string.
# =============================================================================

variable "weed_binary" {
  description = "Path to the weed executable on the target host."
  type        = string
  default     = "/usr/bin/weed"
}

variable "cluster_name" {
  description = "Logical cluster name (WEED_CLUSTER_DEFAULT)."
  type        = string
  default     = "sw"
}

variable "log_level" {
  description = "Global glog verbosity (-v)."
  type        = number
  default     = 1
}

variable "log_to_stderr" {
  description = "Log to stderr (journald) instead of -logdir. Recommended on systemd."
  type        = bool
  default     = true
}

variable "monitoring_enabled" {
  description = "Gate the -metricsPort/-metrics.address flags. When false the metrics port is not bound, matching the chart."
  type        = bool
  default     = false
}

variable "enable_security" {
  description = "Emit the security.toml [grpc] mTLS block and reference per-component certs. Independent of JWT."
  type        = bool
  default     = false
}

# ----------------------------------------------------------------------------
# Security / secrets (the core only references paths + renders security.toml;
# cert/secret material is generated by the wrapper, never defaulted here).
# ----------------------------------------------------------------------------
variable "security" {
  description = "mTLS + JWT signing configuration. Secret values must be supplied (never defaulted in module code)."
  type = object({
    cert_dir                   = optional(string, "/usr/local/share/ca-certificates")
    allowed_wildcard_domain    = optional(string, "")
    allowed_common_names       = optional(string, "")
    jwt_signing_key            = optional(string, "")
    jwt_signing_read_key       = optional(string, "")
    jwt_filer_signing_key      = optional(string, "")
    jwt_filer_signing_read_key = optional(string, "")
  })
  default   = {}
  sensitive = true
}

variable "hardening" {
  description = "systemd hardening directives (OpenShift SCC analogs). Relax per field if needed."
  type = object({
    run_as_user       = optional(string, "seaweedfs")
    no_new_privileges = optional(bool, true)
    protect_system    = optional(bool, true)
    cap_drop_all      = optional(bool, true)
  })
  default = {}
}

variable "env_file" {
  description = "Path to the systemd EnvironmentFile holding secret env (DB creds, S3 admin key) fetched at boot. Optional (-prefixed in the unit, so a missing file is tolerated)."
  type        = string
  default     = "/etc/seaweedfs/weed.env"
}

variable "render_secret_files" {
  description = <<-EOT
    When true (default), secret-bearing config (security.toml, S3 identity JSON)
    is written directly into cloud-init user_data. Convenient for the local test
    harness and simple deployments. Set to false to keep secrets OUT of user_data
    (and out of the cloud metadata service): the files are then exposed only via
    the secret_files_by_node output, and the wrapper is expected to deliver them
    from a secret store via boot_fetch_script.
  EOT
  type        = bool
  default     = true
}

variable "boot_fetch_script" {
  description = "Optional shell script written to /opt/seaweedfs/fetch-secrets.sh (root, 0755) and run before the weed unit starts. Used by wrappers to pull certs/secrets from a cloud secret store at boot."
  type        = string
  default     = ""
}

# ----------------------------------------------------------------------------
# Master (Raft quorum). Keyed `nodes` map -> for_each, never count.
# ----------------------------------------------------------------------------
variable "master" {
  description = "Master tier. nodes is a map keyed by stable node id (m0/m1/m2)."
  type = object({
    enabled = optional(bool, true)
    nodes = optional(map(object({
      address   = string
      port      = optional(number)
      grpc_port = optional(number)
      data_dir  = optional(string)
      disk_mounts = optional(list(object({
        mountpoint = string
        fstype     = optional(string, "ext4")
        devices    = optional(list(string), [])
      })), [])
    })), {})
    port                 = optional(number, 9333)
    grpc_port            = optional(number, null) # null => weed auto = port+10000
    metrics_port         = optional(number, 9327)
    metrics_ip           = optional(string, "")
    ip_bind              = optional(string, "0.0.0.0")
    data_dir             = optional(string, "/var/lib/seaweedfs/master")
    default_replication  = optional(string, "000")
    volume_size_limit_mb = optional(number, 1000)
    volume_preallocate   = optional(bool, false)
    garbage_threshold    = optional(number, null)
    disable_http         = optional(bool, false)
    raft_hashicorp       = optional(bool, false)
    resume_state         = optional(bool, true) # deliberate deviation: binary default false
    election_timeout     = optional(string, "10s")
    heartbeat_interval   = optional(string, "300ms")
    white_list           = optional(string, "")
    extra_args           = optional(list(string), [])
  })
  default = {}
}

# ----------------------------------------------------------------------------
# Volume (stateful disk owners). Keyed `nodes` map.
# ----------------------------------------------------------------------------
variable "volume" {
  description = "Volume tier. Each node owns one or more data dirs (-> -dir / -max)."
  type = object({
    enabled = optional(bool, true)
    nodes = optional(map(object({
      address     = string
      port        = optional(number)
      grpc_port   = optional(number)
      public_url  = optional(string)
      rack        = optional(string)
      data_center = optional(string)
      data_dirs = optional(list(object({
        path        = string
        max_volumes = optional(number, 0) # 0 => auto on non-windows
      })))
      idx_dir = optional(string)
      disk_mounts = optional(list(object({
        mountpoint = string
        fstype     = optional(string, "ext4")
        devices    = optional(list(string), [])
      })), [])
    })), {})
    port         = optional(number, 8080)
    metrics_port = optional(number, 9327)
    metrics_ip   = optional(string, "")
    ip_bind      = optional(string, "0.0.0.0")
    data_dirs = optional(list(object({
      path        = string
      max_volumes = optional(number, 0)
    })), [{ path = "/data", max_volumes = 0 }])
    idx_dir                = optional(string, "")
    read_mode              = optional(string, "proxy")
    compaction_mbps        = optional(number, 50)
    min_free_space_percent = optional(string, "1")
    file_size_limit_mb     = optional(number, null)
    index                  = optional(string, "memory")
    images_fix_orientation = optional(bool, false)
    white_list             = optional(string, "")
    extra_args             = optional(list(string), [])
  })
  default = {}
}

# ----------------------------------------------------------------------------
# Filer (+ optional embedded S3). Keyed `nodes` map.
# ----------------------------------------------------------------------------
variable "filer" {
  description = "Filer tier. Default leveldb2-replicated HA (each filer has its own store)."
  type = object({
    enabled = optional(bool, true)
    nodes = optional(map(object({
      address   = string
      port      = optional(number)
      grpc_port = optional(number)
      data_dir  = optional(string)
      disk_mounts = optional(list(object({
        mountpoint = string
        fstype     = optional(string, "ext4")
        devices    = optional(list(string), [])
      })), [])
    })), {})
    port                      = optional(number, 8888)
    metrics_port              = optional(number, 9327)
    metrics_ip                = optional(string, "")
    ip_bind                   = optional(string, "0.0.0.0")
    data_dir                  = optional(string, "/var/lib/seaweedfs/filer") # -defaultStoreDir for leveldb2
    default_replica_placement = optional(string, "000")
    dir_list_limit            = optional(number, 100000)
    max_mb                    = optional(number, null)
    disable_dir_listing       = optional(bool, false)
    disable_http              = optional(bool, false)
    encrypt_volume_data       = optional(bool, false)
    rack                      = optional(string, "")
    data_center               = optional(string, "")
    filer_group               = optional(string, "")
    extra_env                 = optional(map(string), {})
    extra_args                = optional(list(string), [])
    s3 = optional(object({
      enabled     = optional(bool, false)
      port        = optional(number, 8333)
      https_port  = optional(number, 0)
      domain_name = optional(string, "")
      config_path = optional(string, "/etc/seaweedfs/s3_config.json")
    }), {})
  })
  default = {}
}

# ----------------------------------------------------------------------------
# S3 gateway (standalone). Keyed `nodes` map (stateless, but kept keyed for
# parity; wrappers may instead drive an ASG).
# ----------------------------------------------------------------------------
variable "s3" {
  description = "Standalone S3 gateway tier."
  type = object({
    enabled = optional(bool, false)
    nodes = optional(map(object({
      address   = string
      port      = optional(number)
      grpc_port = optional(number)
    })), {})
    port                  = optional(number, 8333)
    https_port            = optional(number, 0)
    iceberg_port          = optional(number, null)
    metrics_port          = optional(number, 9327)
    ip_bind               = optional(string, "0.0.0.0")
    domain_name           = optional(string, "")
    filer_address         = optional(string, "") # override; else first filer node
    config_path           = optional(string, "/etc/seaweedfs/s3_config.json")
    audit_log_config_path = optional(string, "")
    cert_file             = optional(string, "")
    key_file              = optional(string, "")
    cacert_file           = optional(string, "")
    verify_client_cert    = optional(bool, false)
    extra_args            = optional(list(string), [])
  })
  default = {}
}

# ----------------------------------------------------------------------------
# S3 identities -> rendered into the s3 config JSON (non-admin only; the admin
# credential is delivered via EnvironmentFile, never the JSON).
# ----------------------------------------------------------------------------
variable "s3_identities" {
  description = "Non-admin S3 identities rendered into the config JSON. Admin key goes in the EnvironmentFile, not here."
  type = list(object({
    name       = string
    access_key = string
    secret_key = string
    actions    = list(string)
  }))
  default   = []
  sensitive = true
}

# ----------------------------------------------------------------------------
# All-in-one (single `weed server` process).
# ----------------------------------------------------------------------------
variable "all_in_one" {
  description = "All-in-one tier (weed server). Mutually exclusive with the distributed tiers."
  type = object({
    enabled = optional(bool, false)
    nodes = optional(map(object({
      address  = string
      data_dir = optional(string)
      disk_mounts = optional(list(object({
        mountpoint = string
        fstype     = optional(string, "ext4")
        devices    = optional(list(string), [])
      })), [])
    })), {})
    data_dir             = optional(string, "/data")
    ip_bind              = optional(string, "0.0.0.0")
    master_port          = optional(number, 9333)
    volume_port          = optional(number, 8080)
    filer_port           = optional(number, 8888)
    default_replication  = optional(string, "000")
    volume_size_limit_mb = optional(number, 1000)
    idle_timeout         = optional(number, 30)
    metrics_port         = optional(number, 9324)
    disable_http         = optional(bool, false)
    s3 = optional(object({
      enabled     = optional(bool, false)
      port        = optional(number, 8333)
      config_path = optional(string, "/etc/seaweedfs/s3/s3_config.json")
      domain_name = optional(string, "")
    }), {})
    extra_args = optional(list(string), [])
  })
  default = {}
}